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3 years ago

I need help ASAP ??????,???????!!!!!!!!!

Mathematics

1 answer:

Harman [31]3 years ago

4 0

Answer: My answer would be

Step-by-step explanation:

I believe it's D. because they both match up at day 3.

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A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.

Crank

Answer: 1.25

Step-by-step explanation:

Given: A college-entrance exam is designed so that scores are normally distributed with a mean $(\mu)$ = 500 and a standard deviation $(\sigma)$ = 100.

A z-score measures how many standard deviations a given measurement deviates from the mean.

Let Y be a random variable that denotes the scores in the exam.

Formula for z-score = $\dfrac{Y-\mu}{\sigma}$

Z-score = $\dfrac{625-500}{100}$

⇒ Z-score = $\dfrac{125}{100}$

⇒Z-score =1.25

Therefore , the required z-score = 1.25

6 0

3 years ago

Given the points (2, 4) & (-1,-5), what is the equation of the line?

baherus [9]

Answer:

y =1 /3 x + 14 /3

Step-by-step explanation:

8 0

3 years ago

The larger of two numbers is 15 less than two times the smaller number. If the sum of the two numbers is 63, find the LARGER num

Pachacha [2.7K]

Answer:

Let x = the smaller number

Let 3x + 15 = the larger number

x + 3x + 15 = 63

4x = 48

x = 12

3(12) + 15 = 51

Step-by-step explanation:

I hope this helps

8 0

3 years ago

Ervin sells vintage cars. Every three months

Ira Lisetskai [31]

This doesn't make sense ask another

6 0

3 years ago

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Find the cosine of ∠J.

Luden [163]

Answer:

$\cos = \frac{base}{hypotenuse} = \\ \cos(j) = \frac{ \sqrt{29} }{ \sqrt{94} } = \sqrt{ \frac{29}{94} } \\ answer = \sqrt{ \frac{29}{94} }$

7 0

3 years ago